1 cup (8 fluid ounces) milk2 1/2 cups (300 g) tapioca st plus more for sprinkling*1/4 teaspoon kosher salt3 tablespoons (42 g) canola oil1 egg (60 g out of shell) at room temperature, beaten7 ounces low-moisture part-skim mozzarella cheese, grated2 ounces parmigiano-reggiano cheese, finely grated*i only recommen